Pick-finding device.



No. 839,485. PATENTED DEC. 25, 1906. J. G. KING.

PICK FINDING DEVICE.

APPLIOATION TILED DEG-19. 1906.

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No. 839,485. PATENTED DEC. 25, 1906. J. G. KING. PICK FINDING DEVICE.

APPLICATION FILED 1330.19, 1905.

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UNITED STATES PATENT @FEICE.

PlCK-FlNDlNG DEVICE.

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed December 19, 1905. Serial No. 292,474.

To ctZZ whom it may concern:

.Be it known that I, JOHN G. KING, a citizen of the United States, residing at Charlotte, in the county of Mecklenburg and State of North Carolina, have invented certain new .and useful Improvements in Pick-Finding Devices; and I do hereby declare the follow .ing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertams to I make and use the same.

1 The invention relates to a pick-finding device used in connection with the stopping mechanism of a loom and the object of the device is to control the belt-shipper handle when the loom attempts to stop or change the filling automatically until the loom is in a preferred position, so as to avoid mispicks.

In the drawings, Figure 1 is an end view of the pick-findmg mechanism, showing also portions of the loom. Fig. 2 is a front view of the same. Fig. 3 is a sectional plan view taken on the line 00 0c in Fig. 2.

A is a portion of the frame of theloom, and A is the lay which supports the shuttle, which is forced from one side of the loom to the other.

. filling-fork slide or slip b, which is slidable' B. is the lay-sword, which is mounted on a shaft B and which is oscillated crosswise of the lay by any approved driving mechanism.

C is the filling-fork, which is pivoted in a crosswise of the lay in a guide I).

D is the filling-fork lever, which is pivoted .to the frame A by a pin (Z. One end of this lever engages with the rear end projection c of the filling-fork, and its other end portion is operated by a cam D, which is revolved continuously by any approved driving mechanhaving its lower end secured to the loomframe, andit is normally held in position by a catch. hen the filling-fork slip is moved back, it operates a trip 6, which releases the spring-stopping lever from its catch. This I stopping-lever is provided with or connected .to a belt-shipper E of any approved construction, and when it is released from its retaining-catch it normally, ships the driving belt onto the loose pulley and stops the loom.

All the above-mentioned parts are of ordinary approved construction, such as commonly in use on looms.

In order to prevent the loom from stopping suddenly and to constrain it to stop in a preferred and prearranged position, a novel pick-finding device is used, as hereinafterdescribed.

F is a lever which is pivoted to the frame A by a pin f. The lower end portion of this lever is provided with a slot f, which engages with a pin Fon a bracket secured to the laysword B, so that the lever is oscillated by the lay-sword. The upper end portion of the lever F has a hook-pawl G pivoted to it by a pin 9.

II is a ratchet-toothed wheel which is j ournaled 011 a pin 7L, which projects from the frame A, and 7a. is a pivoted check-pawl which prevents the said ratchet-wheel from being revolved backward. A pin 3 is secured to one of the said pawls and holds the other said pawl at a prearranged distance from it. A dog g is pivoted on the pin it and normally supports both pawls G and h so that they are normally out of engagement with the teeth of the ratchet-wheel.

I is a supplemental retaining-catch for the belt-shipper lever E. This catch I has a hooked outer end i, which engages with the lever E, and it is pivoted on a verticalpin i, which projects from a bracket I, which is secured to the frame A. The inner end portion of the catch I projects under the ratchettoothed wheel II and is operatively connected with the lower end portion of the dogg.

J is a spring coiled about the pin 72. and connected with the ratchet-toothed wheel and the frame, so that the ratchet-wheel is revolved backward when the check-pawl h is released. A stop 7' projects from the ratchettoothcd wheel and engages with the frame, so that the spring J cannot revolve the ratchet-toothed wheel too far in a backward direction.

A spring retaining device is provided for holding the catch I in its extreme positions. This retaining device preferably consists of two levers K and K, which are pivoted to the frame A by pins 7r and 7c, respectively. The adjacent end portions of these two levers are connected by a pin L, and M is a spring secured to the opposite end portions of the said levers. Theirpper lever Kis provided with a projection m, which engages with the catch I, and'the said device holds i the catch in either of its extreme positions and prevents it from being displaced accidentally or prematurely. Stop-pins 4 are provided on the frame A for limiting the movements of the levers K and K.

N is a trip-lever which is secured on a shaft n, which is journaled in the frame. The lower end portion of this lever bears against one side of the inner end portion of the catch I. N is an arm which is also secured to the shaft n and which is arranged in the rearward path of the filling-fork slip b.

P is a pin which projects radially from the ratchet-toothed wheel, and p is a series of holes in the said wheel. The pin P may be placed in engagement with any one ofthe oles p, and it is arranged in the path'of the catch The operation of the pick-finding device is as follows: When the filling is absent and the filling-fork lever therefore moves the fil1ingfork slip backward, the said slip strikes the arm N and causes the lever N to move the catch I into the path of the stopping-lever E. The spring M causes the catch I to move suddenly and retains it in position. This movement of the catch I turns the dog g on its pivot and allows the two pawls G and h to engage with the teeth of the ratchet-wheel II. The ratchetheel is then revolved intermittently from the lay-sword by means of the lever and hook-pawl and against the tension of the spring J until the pin P strikes the catch I and moves it out of engagement with the stopping-lever E. The loom is stopped automatically when the lever E is released, and the moment of its release is determined by the position of the pin. P. The catch I holds the stopping-lever until the loom has made any desired or prearranged number of picks after the filling is exhausted. A loom provided with this device and operating on any kind of twills, ranging from three to twelve harness, can be made to find the pick before it stops after the filling gives out, and the loom will stop with the correct shed open and ready to receive the new filling without any trouble to the operator. When the catch I releases the controlling or stopping lever IE, it raises the pawls out of engagement with the ratchet-toothed wheel, and the said wheel is restored to its original position by the spring J. As the catch I is normally out of engagement with the stopping-lever, the said stopping-lever can be operated by hand as often as desired in the ordinary manner.

This device can be applied to various makes of loom without altering or interfering with the working parts of the same, and it can also be applied to what is known as an automatic loom by making the catch I engage with the changer-lever instead of the beltshipper lever.

What I claim is 1. The combination, with a loom provided with a controlling-lever, a lay-sword, a filling-fork slide having a filling-fork, and means for actuating the said parts; of a pick-finding device comprising a catch for holding the said controlling-lever, lever mechanism for moving the said catch into engagement with the said lever when the said filling-fork slide is retracted, and tappet mechanism for subsequently releasing the said lever operatively connected with the said lay-sword.

2. The combination, with a loom provided with a controllinglever, a lay-sword, a filling-fork slide having a filling-fork, and means for actuating the said parts; of a pickfinding device comprising a catch for ho ding the said controllinglever, lever mechanism for moving the said catch into engagement with the said lever when the filling-fork slide is retracted, a wheel provided with an adjustable tappet for releasing the said lever from the said catch, driving devices for revolving the said wheel from the said laysword, and means for placing the said wheel into and out of engagement with the said driving devices connected to the said catch.

3. In a pick-finding device, the combination, with the controlling-lever and the filling-fork slide of a loom; of a pivoted catch for engaging the said controlling-lever, and trip mechanism arranged in the path of the said filling-fork slide and operatin to place the said catch in engagement with tIle said lever when the said slide is retracted.

4. In a pick-finding device, the combination, with the controlling-lever and the filling-fork slide of a loom; of a pivoted catch controlling-lever, a.

for engaging the said rock-shaft, an arm secured on the said rockshaft and arranged in the path of the said filling-fork slide, and a trip-lever secured on the said rock-shaft and operating to place the said catch in engagement with the said lever when the said slide is retracted.

5. In a pick-finding device, the combination, with the controlling-lever and the laysword of a loom; of a pivoted operating-lever connected with the said lay-sword, a revoluble ratchet-toothed wheel, a pawl for revolving the said wheel from the said operating, lever, a dog normally holding the said pawl out of engagement with the said wheel, a catch for enga ing with the said controlling lever operative y connected with the said dog and holding it in its normal position until the said catch is moved into the path of the said controlling-lever, and a tappet for subsequently moving the said catch out of engagement with the said controlling-lever, said tappet being operated by the said ratchetwheel.

6. In a pick-finding device, the combination, with the controlling-lever and the filling-fork slide of a loom; of a pivoted catch for engaging the said controlling-lever, two pivoted levers having their adjacent end portions pivotally connected together and one of the said levers being operatively connected with the said catch, a spring arranged between the opposite end portions of the said levers and operating to retain the said catch in its extreme positions, and trip mechanism arranged in the path of the said filling-fork slide and engaging with the said catch.

7. In a pick-finding device, the combina tion, with the controlling-lever and the laysword of a loom; of a pivoted operating-lever connected with the said lay-sword, a revoluble ratchet-toothed wheel, a pawl for revolving the said wheel from the said operating lever, a pivoted stop-pawl, a dog which normally holds both the said pawls out of engagement with the said wheel, a catch for engaging the said controlling-lever operatively connected with the said dog, and a tappet operated by the said ratchet-toothed wheel for moving the said catch out of engagement with the said controlling-lever.

8. In a pick-finding device, the combination, with the controlling-lever and the laysword of a loom; of a pivoted operating-lever connected with the said lay-sword, a revoluble ratchet-toothed wheel provided with a series of holes, a pawl for revolving the said wheel from the said operating-lever, a catch for engaging the said controlling-lever, a dog operated by the said catch and normally holding the said pawl out of engagement with the said wheel, and a trip-pin engaging with one of the said holes and operating to disengage the said catch from the said controllinglever and to disengage the said pawl from the said wheel.

9. In a pick-finding device, the combination, with the controlling-lever of a loom, a revoluble wheel, and a return-spring connected thereto; of driving mechanism for revolving the said wheel against the tension of the said spring, a catch for engaging the said controlling-lever, a trip-pin projecting from the said wheel and engaging with the saidv catch, and means for disengaging the said driving mechanism from the said wheel operated by the said catch upon the release therefrom of the said controlling-lever.

' In testimony whereof I have affixed my signature in the presence of two witnesses.

JOHN G. KING. 

